Patent US3655829A successfully refreshed from Google Patents.
US3655829A
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Manufactured articles of blends of thermoplastic polymers having different fluidity degrees
Assignee: Montedison SpA
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Filing: 1965-01-13
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Granted: 1972-04-11
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Expires: 1985-01-13
Abstract
Abstract STIPPLED SURFACE THERMOPASTIC ARTICLES ARE PRODUCED BY EXTRUDING A MIXTURE OF A POLYMER OF HIGHER FLUIDITY DEGREE AND ONE OF LOWER FLUIDITY DEGREE AT A TEMPERATURE ABOVE THE TEMPERATURE OF FLUIDIZATION OF THE FORMER BUT BELOW THE TEMPERATURE OF FLUIDIZATION OF THE LATTER. PREFERRED POLYMERS INCLUDE POLYMETHYLMETHACRYLATE, ABS TYPE RESINS, AND VARIOUS COPOLYMERS OF METHYLMETHACRYLATE OR OF STYRENE.
Inventors
- 👤 Isidoro Ronzoni
- 👤 Mario Catoni
- 👤 Pier Lodovico Chini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:33
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; B; B29; B29C; B29C48/00; B29C48/16; B29C48/17; B29C48/175; C08L55/00; C08L55/02; C08L57/00; B29C48/03; B29C48/07; B29C48/09; B29C48/12; C08L2205/00; C08L2205/02; C08L2205/14; C08L2205/18; Y; Y10; Y10S; Y10S260/00; Y10S260/32; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |